I don't know what happened, we had it working but with some UI changes, it stopped working properly. So, I tried to create a new file, to rule out all the CSS, and to isolate just the RadTreeView and it's still not behaving as expected. Here's what I have in the .aspx page.
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="SearchForm.aspx.cs" Inherits="Cnet_Forum.SearchForm" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<telerik:radscriptmanager runat="server" id="RadScriptManager1">
<Scripts>
<asp:ScriptReference Assembly="System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
Name="MicrosoftAjax.js" Path="https://ajax.microsoft.com/ajax/4.0/MicrosoftAjax.js" />
</Scripts>
</telerik:radscriptmanager>
<div>
<div class="panel-expand">
<telerik:RadTreeView ID="area_tree_view" runat="server" runat="server" CheckBoxes="True" TriStateCheckBoxes="True"
CheckChildNodes="true" MultipleSelect="True" >
</telerik:RadTreeView>
</div>
</div>
</form>
</body>
</html>
And the code-behind page:
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using DbforumData;
using DbforumData.dataset;
using Telerik.Web.UI;
namespace Cnet_Forum
{
public partial class SearchForm : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string db = ConfigurationManager.ConnectionStrings["db"].ConnectionString;
CandidateDataSource datasource = new CandidateDataSource(db);
FunctionGroupDataSet functionset = datasource.GetFunctionGroup();
datasource.Dispose();
LoadSubjectGrid(functionset);
}
protected void LoadSubjectGrid(FunctionGroupDataSet functionset)
{
DataRow[] results;
var view = area_tree_view;
RadTreeNode groupNode, functionNode;
foreach (var grouprow in functionset.FunctionGroup) // the parent node
{
results = functionset.Function.Select("parentNodeId = " + grouprow.function_group_id);
groupNode = new RadTreeNode(grouprow.function_group_name, grouprow.function_group_id.ToString())
{
Expanded = false,
Checkable = true
};
view.Nodes.Add(groupNode);
foreach (DataRow functionRow in results) //the chile nodes
{
functionNode = new RadTreeNode((string)functionRow["childNodeName"], Convert.ToString(functionRow["childNodeId"]));
groupNode.Nodes.Add(functionNode);
}
}
}
}
}
Obviously you can't run it because it requires db connection but you get the idea.
2 Answers, 1 is accepted
Rank 1
As it appears from the provided screenshot the stylesheets are not loaded, thus the control has no styling. In order to troubleshoot this problem, please log your traffic using Fiddler and attach the log file in the support ticket which you have submitted for the same problem.
Regards,
Dimitar Terziev
Telerik